server.js

require('dotenv').config();
// setting up express Server
const express = require('express');
const path = require('path');
const axios = require("axios");
const overview = require("./routes/a-overview");
const income = require("./routes/a-income");
const balance = require("./routes/a-balance");
const cashflow = require("./routes/a-cashflow");
const health = require("./routes/a-sectorhealth");
const crypto = require("./routes/a-crypto-exchange");
const companySearch = require("./routes/company/search");
const companyChartData = require("./routes/company/chart-data");


const cors = require('cors');
const Mongoose = require('mongoose');

const app = express();
const router = express.Router();

// Connect to the MongoDB Database
app.use(cors());

app.use(express.static("client"));

// ! Connecting to the MongoDB Database
const db = 'mongodb+srv://user:user@cluster0.ykk7s.mongodb.net/<dbname>?retryWrites=true&w=majority'

const connectDB = async () => {
  try {
    await Mongoose.connect(db, {useNewUrlParser: true, useUnifiedTopology: true, useCreateIndex: true, useFindAndModify: false})
    console.log("MongoDB Connected...");
  } catch (err) {
    console.error(err.message);
  }
}

connectDB();

// Initialize universal middleware
app.use(express.json({ extended: false }));

// to avoid cors error, give permission ot front end
app.use(
  cors({
    origin: 'http://localhost:8080',
    methods:'GET,HEAD,PUT,PATCH,POST,DELETEGET,HEAD,PUT,PATCH,POST,DELETE',
    credentials: true,
  }),
); 

app.use('/api/users', 
  require('./routes/api/users')
)

// Define Routes
app.use('/api/',
  overview,
  income,
  balance,
  cashflow,
  health,
  crypto,
);

app.use('/company/',
  companySearch,
  companyChartData,
)

app.use((req, res, next, err) => {
  if (err) {
    console.log(`ERROR at use:  ${err}`);
  }
});

// Setting up the port
const PORT = 3000;
app.listen(PORT, () => console.log(`Server started on port ${PORT}`));